XCode 15 warnings

For sure, Xcode may be very verbose and some warnings are hard to solve (even impossible).

But you can silence the warnings and just keep errors.

• In the Issues navigator
• click on x at the bottom on the Filter line

Could you show the real and more complete code, so that we can understand these "hang pont" (???) messages

I am sorry, I meant hang point, not "pont" . As far as more complete code goes, I don' t see much point, since it happens at initailization of a CGFloat instance variable, but here you go, code for the entire class:

class FileOrFolderCell: UICollectionViewCell, CustomCell {
    @IBOutlet weak var emojiLabel: UILabel!
    @IBOutlet weak var nameLabel: MarqueeLabel!
    @IBOutlet weak var emojiBadge: UILabel!
    @IBOutlet weak var imageView: UIImageView!
    
    let emojiLabelInitialFontSize: CGFloat = 64

    @IBOutlet weak var newBadge: UILabel!
    var url: URL!
    var thumbURL: URL?

    var isNew = false {
        didSet {
            newBadge.isHidden = !isNew
        }
    }
    
    var emoji = "" {
        didSet {
            emojiLabel.text = emoji
            emojiBadge.text = emoji
        }
    }
    func setFontSizesFor(width: CGFloat) {
        emojiLabel.font = emojiLabel.font?.withSize(32)
        newBadge.font = newBadge.font?.withSize(20)
    }
    
}

As you see, there is basically nothing there and whatever little this is, it all has to run on the UI thread (it is a subclass of UICollectionView).